private static void PubSync(Context ctx, IConnection c, Stats stats, int id)
{
IJetStream js = c.CreateJetStreamContext();
if (ctx.LatencyFlag)
{
_pub(ctx, stats, id, (s, p) => js.Publish(BuildLatencyMessage(s, p)));
}
else
{
_pub(ctx, stats, id, (s, p) => js.Publish(s, p));
}
}
public static void JsPublish(IJetStream js, string subject, int startId, int count)
{
for (int x = 0; x < count; x++)
{
js.Publish(new Msg(subject, DataBytes(startId++)));
}
}
public void TestPublishNoAck()
{
Context.RunInJsServer(c =>
{
CreateDefaultTestStream(c);
JetStreamOptions jso = JetStreamOptions.Builder().WithPublishNoAck(true).Build();
IJetStream js = c.CreateJetStreamContext(jso);
string data1 = "noackdata1";
string data2 = "noackdata2";
PublishAck pa = js.Publish(SUBJECT, Encoding.ASCII.GetBytes(data1));
Assert.Null(pa);
Task <PublishAck> task = js.PublishAsync(SUBJECT, Encoding.ASCII.GetBytes(data2));
Assert.Null(task.Result);
IJetStreamPushSyncSubscription sub = js.PushSubscribeSync(SUBJECT);
Msg m = sub.NextMessage(DefaultTimeout);
Assert.NotNull(m);
Assert.Equal(data1, Encoding.ASCII.GetString(m.Data));
m = sub.NextMessage(DefaultTimeout);
Assert.NotNull(m);
Assert.Equal(data2, Encoding.ASCII.GetString(m.Data));
});
}
public void Run()
{
for (int x = 1; x <= msgCount; x++)
{
js.Publish(SUBJECT, Encoding.ASCII.GetBytes("Data # " + x));
}
}
public void TestPublishVarieties()
{
Context.RunInJsServer(c =>
{
CreateDefaultTestStream(c);
IJetStream js = c.CreateJetStreamContext();
PublishAck pa = js.Publish(SUBJECT, DataBytes(1));
AssertPublishAck(pa, 1);
Msg msg = new Msg(SUBJECT, DataBytes(2));
pa = js.Publish(msg);
AssertPublishAck(pa, 2);
PublishOptions po = PublishOptions.Builder().Build();
pa = js.Publish(SUBJECT, DataBytes(3), po);
AssertPublishAck(pa, 3);
msg = new Msg(SUBJECT, DataBytes(4));
pa = js.Publish(msg, po);
AssertPublishAck(pa, 4);
pa = js.Publish(SUBJECT, null);
AssertPublishAck(pa, 5);
msg = new Msg(SUBJECT);
pa = js.Publish(msg);
AssertPublishAck(pa, 6);
pa = js.Publish(SUBJECT, null, po);
AssertPublishAck(pa, 7);
msg = new Msg(SUBJECT);
pa = js.Publish(msg, po);
AssertPublishAck(pa, 8);
IJetStreamPushSyncSubscription s = js.PushSubscribeSync(SUBJECT);
AssertNextMessage(s, Data(1));
AssertNextMessage(s, Data(2));
AssertNextMessage(s, Data(3));
AssertNextMessage(s, Data(4));
AssertNextMessage(s, null); // 5
AssertNextMessage(s, null); // 6
AssertNextMessage(s, null); // 7
AssertNextMessage(s, null); // 8
// bad subject
Assert.Throws <NATSNoRespondersException>(() => js.Publish(Subject(999), null));
});
}
public static void JsPublish(IJetStream js, string subject, string prefix, int startId, int count)
{
int end = startId + count - 1;
for (int x = startId; x <= end; x++)
{
string data = prefix + x;
js.Publish(new Msg(subject, Encoding.ASCII.GetBytes(data)));
}
}
public static void Main(string[] args)
{
ArgumentHelper helper = new ArgumentHelperBuilder("JetStream Publish Vs Core Publish", args, Usage)
.DefaultStream("js-or-core-stream")
.DefaultSubject("js-or-core-subject")
.Build();
try
{
using (IConnection c = new ConnectionFactory().CreateConnection(helper.MakeOptions()))
{
// Create a JetStreamManagement context.
IJetStreamManagement jsm = c.CreateJetStreamManagementContext();
// Use the utility to create a stream stored in memory.
JsUtils.CreateStreamExitWhenExists(jsm, helper.Stream, helper.Subject);
// create a JetStream context
IJetStream js = c.CreateJetStreamContext();
// Regular Nats publish is straightforward
c.Publish(helper.Subject, Encoding.ASCII.GetBytes("regular-message"));
// A JetStream publish allows you to set publish options
// that a regular publish does not.
// A JetStream publish returns an ack of the publish. There
// is no ack in a regular message.
Msg msg = new Msg(helper.Subject, Encoding.ASCII.GetBytes("js-message"));
PublishAck pa = js.Publish(msg);
Console.WriteLine(pa);
// set up the subscription
IJetStreamPushSyncSubscription sub = js.PushSubscribeSync(helper.Subject);
c.Flush(500); // flush outgoing communication with/to the server
// Both messages appear in the stream as JetStream messages
msg = sub.NextMessage(500);
msg.Ack();
Console.WriteLine("Received Data: '" + Encoding.ASCII.GetString(msg.Data) + "'\n Meta: " + msg.MetaData);
msg = sub.NextMessage(500);
msg.Ack();
Console.WriteLine("Received Data: '" + Encoding.ASCII.GetString(msg.Data) + "'\n Meta: " + msg.MetaData);
// delete the stream since we are done with it.
jsm.DeleteStream(helper.Stream);
}
}
catch (Exception ex)
{
helper.ReportException(ex);
}
}
public void TestPushSyncFlowControl()
{
InterlockedInt fcps = new InterlockedInt();
Action <Options> optionsModifier = opts =>
{
opts.FlowControlProcessedEventHandler = (sender, args) => { fcps.Increment(); };
};
Context.RunInJsServer(new TestServerInfo(TestSeedPorts.AutoPort.Increment()), optionsModifier, c =>
{
// create the stream.
CreateDefaultTestStream(c);
// Create our JetStream context.
IJetStream js = c.CreateJetStreamContext();
byte[] data = new byte[8192];
int MSG_COUNT = 1000;
for (int x = 100_000; x < MSG_COUNT + 100_000; x++)
{
byte[] fill = Encoding.ASCII.GetBytes("" + x);
Array.Copy(fill, 0, data, 0, 6);
js.Publish(new Msg(SUBJECT, data));
}
InterlockedInt count = new InterlockedInt();
HashSet <string> set = new HashSet <string>();
ConsumerConfiguration cc = ConsumerConfiguration.Builder().WithFlowControl(1000).Build();
PushSubscribeOptions pso = PushSubscribeOptions.Builder().WithConfiguration(cc).Build();
IJetStreamPushSyncSubscription ssub = js.PushSubscribeSync(SUBJECT, pso);
for (int x = 0; x < MSG_COUNT; x++)
{
Msg msg = ssub.NextMessage(1000);
byte[] fill = new byte[6];
Array.Copy(msg.Data, 0, fill, 0, 6);
string id = Encoding.ASCII.GetString(fill);
if (set.Add(id))
{
count.Increment();
}
msg.Ack();
}
Assert.Equal(MSG_COUNT, count.Read());
Assert.True(fcps.Read() > 0);
});
}
public void TestGetAndDeleteMessage()
{
Context.RunInJsServer(c => {
CreateDefaultTestStream(c);
IJetStream js = c.CreateJetStreamContext();
MsgHeader h = new MsgHeader();
h.Add("foo", "bar");
DateTime beforeCreated = DateTime.Now;
js.Publish(new Msg(SUBJECT, null, h, DataBytes(1)));
js.Publish(new Msg(SUBJECT, null));
IJetStreamManagement jsm = c.CreateJetStreamManagementContext();
MessageInfo mi = jsm.GetMessage(STREAM, 1);
Assert.Equal(SUBJECT, mi.Subject);
Assert.Equal(Data(1), System.Text.Encoding.ASCII.GetString(mi.Data));
Assert.Equal(1U, mi.Sequence);
Assert.True(mi.Time >= beforeCreated);
Assert.NotNull(mi.Headers);
Assert.Equal("bar", mi.Headers["foo"]);
mi = jsm.GetMessage(STREAM, 2);
Assert.Equal(SUBJECT, mi.Subject);
Assert.Null(mi.Data);
Assert.Equal(2U, mi.Sequence);
Assert.True(mi.Time >= beforeCreated);
Assert.Null(mi.Headers);
Assert.True(jsm.DeleteMessage(STREAM, 1));
Assert.Throws <NATSJetStreamException>(() => jsm.DeleteMessage(STREAM, 1));
Assert.Throws <NATSJetStreamException>(() => jsm.GetMessage(STREAM, 1));
Assert.Throws <NATSJetStreamException>(() => jsm.GetMessage(STREAM, 3));
Assert.Throws <NATSJetStreamException>(() => jsm.DeleteMessage(Stream(999), 1));
Assert.Throws <NATSJetStreamException>(() => jsm.GetMessage(Stream(999), 1));
});
}
public void TestPublishMiscExceptions()
{
Context.RunInJsServer(c =>
{
CreateDefaultTestStream(c);
IJetStream js = c.CreateJetStreamContext();
// stream supplied and matches
PublishOptions po = PublishOptions.Builder()
.WithStream(STREAM)
.Build();
js.Publish(SUBJECT, DataBytes(999), po);
// mismatch stream to PO stream
po = PublishOptions.Builder()
.WithStream(Stream(999))
.Build();
Assert.Throws <NATSJetStreamException>(() => js.Publish(SUBJECT, DataBytes(999), po));
// invalid subject
Assert.Throws <NATSNoRespondersException>(() => js.Publish(Subject(999), DataBytes(999)));
});
}
public static void PublishInBackground(IJetStream js, String subject, String prefix, int count)
{
new Thread(() => {
try {
for (int x = 1; x <= count; x++)
{
js.Publish(subject, Encoding.ASCII.GetBytes(prefix + "-" + x));
}
} catch (Exception e) {
Console.WriteLine(e);
Environment.Exit(-1);
}
}).Start();
Thread.Sleep(100); // give the publish thread a little time to get going
}
public static void Main(string[] args)
{
ArgumentHelper helper = new ArgumentHelperBuilder("JetStream Publish", args, Usage)
.DefaultStream("example-stream")
.DefaultSubject("example-subject")
.DefaultPayload("Hello")
.DefaultCount(10)
.Build();
try
{
using (IConnection c = new ConnectionFactory().CreateConnection(helper.MakeOptions()))
{
// Use the utility to create a stream stored in memory.
JsUtils.CreateStreamOrUpdateSubjects(c, helper.Stream, helper.Subject);
// create a JetStream context
IJetStream js = c.CreateJetStreamContext();
int stop = helper.Count < 2 ? 2 : helper.Count + 1;
for (int x = 1; x < stop; x++)
{
// make unique message data if you want more than 1 message
byte[] data = helper.Count < 2
? Encoding.UTF8.GetBytes(helper.Payload)
: Encoding.UTF8.GetBytes(helper.Payload + "-" + x);
// Publish a message and print the results of the publish acknowledgement.
Msg msg = new Msg(helper.Subject, null, helper.Header, data);
// We'll use the defaults for this simple example, but there are options
// to constrain publishing to certain streams, expect sequence numbers and
// more. See the JetStreamPublishWithOptionsUseCases example for details.
// An exception will be thrown if there is a failure.
PublishAck pa = js.Publish(msg);
Console.WriteLine("Published message '{0}' on subject '{1}', stream '{2}', seqno '{3}'.",
Encoding.UTF8.GetString(data), helper.Subject, pa.Stream, pa.Seq);
}
}
}
catch (Exception ex)
{
helper.ReportException(ex);
}
}
public static void Publish(IJetStream js, String subject, String prefix, int count, bool verbose = true)
{
if (verbose)
{
Console.Write("Publish ->");
}
for (int x = 1; x <= count; x++)
{
String data = prefix + x;
if (verbose)
{
Console.Write(" " + data);
}
js.Publish(subject, Encoding.UTF8.GetBytes(data));
}
if (verbose)
{
Console.WriteLine(" <-");
}
}
public void TestMessageWithHeadersOnly()
{
Context.RunInJsServer(c =>
{
// create the stream.
CreateDefaultTestStream(c);
// Create our JetStream context.
IJetStream js = c.CreateJetStreamContext();
MsgHeader h = new MsgHeader();
h["foo"] = "bar";
js.Publish(new Msg(SUBJECT, h, DataBytes(1)));
// Build our subscription options.
PushSubscribeOptions options = ConsumerConfiguration.Builder()
.WithHeadersOnly(true).BuildPushSubscribeOptions();
IJetStreamPushSyncSubscription sub = js.PushSubscribeSync(SUBJECT, options);
c.Flush(DefaultTimeout); // flush outgoing communication with/to the server
Msg m = sub.NextMessage(1000);
Assert.Empty(m.Data);
Assert.True(m.HasHeaders);
Assert.Equal("bar", m.Header["foo"]);
Assert.Equal("6", m.Header[JetStreamConstants.MsgSizeHeader]);
sub.Unsubscribe();
// without headers only
sub = js.PushSubscribeSync(SUBJECT);
c.Flush(DefaultTimeout); // flush outgoing communication with/to the server
m = sub.NextMessage(1000);
Assert.Equal(6, m.Data.Length);
Assert.True(m.HasHeaders);
Assert.Equal("bar", m.Header["foo"]);
Assert.Null(m.Header[JetStreamConstants.MsgSizeHeader]);
});
}
public static void Main(string[] args)
{
ArgumentHelper helper = new ArgumentHelperBuilder("NATS JetStream Push Subscribe Queue Durable", args, Usage)
.DefaultStream("qdur-stream")
.DefaultSubject("qdur-subject")
.DefaultQueue("qdur-queue")
.DefaultDurable("qdur-durable")
.DefaultDeliverSubject("qdur-deliver")
.DefaultCount(100)
.DefaultSubsCount(5)
.Build();
try
{
using (IConnection c = new ConnectionFactory().CreateConnection(helper.MakeOptions()))
{
// Create a JetStreamManagement context.
IJetStreamManagement jsm = c.CreateJetStreamManagementContext();
// Use the utility to create a stream stored in memory.
JsUtils.CreateStreamExitWhenExists(jsm, helper.Stream, helper.Subject);
IJetStream js = c.CreateJetStreamContext();
Console.WriteLine();
// create the consumer ahead of time
ConsumerConfiguration cc = ConsumerConfiguration.Builder()
.WithDurable(helper.Durable)
.WithDeliverSubject(helper.DeliverSubject)
.WithDeliverGroup(helper.Queue)
.Build();
jsm.AddOrUpdateConsumer(helper.Stream, cc);
// we will just bind to that consumer
PushSubscribeOptions pso = PushSubscribeOptions.BindTo(helper.Stream, helper.Durable);
InterlockedLong allReceived = new InterlockedLong();
IList <JsQueueSubscriber> subscribers = new List <JsQueueSubscriber>();
IList <Thread> subThreads = new List <Thread>();
for (int id = 1; id <= helper.SubsCount; id++)
{
// setup the subscription
IJetStreamPushSyncSubscription sub = js.PushSubscribeSync(helper.Subject, helper.Queue, pso);
// create and track the runnable
JsQueueSubscriber qs = new JsQueueSubscriber(id, 100, js, sub, allReceived);
subscribers.Add(qs);
// create, track and start the thread
Thread t = new Thread(qs.Run);
subThreads.Add(t);
t.Start();
}
c.Flush(500); // flush outgoing communication with/to the server
// create and start the publishing
Thread pubThread = new Thread(() =>
{
for (int x = 1; x <= helper.Count; x++)
{
js.Publish(helper.Subject, Encoding.ASCII.GetBytes("Data # " + x));
}
});
pubThread.Start();
// wait for all threads to finish
pubThread.Join(10000);
foreach (Thread t in subThreads)
{
t.Join(10000);
}
foreach (JsQueueSubscriber qs in subscribers)
{
qs.Report();
}
Console.WriteLine();
// delete the stream since we are done with it.
jsm.DeleteStream(helper.Stream);
}
}
catch (Exception ex)
{
helper.ReportException(ex);
}
}
public void TestDeliveryPolicy()
{
Context.RunInJsServer(c =>
{
IJetStreamManagement jsm = c.CreateJetStreamManagementContext();
IJetStream js = c.CreateJetStreamContext();
CreateMemoryStream(jsm, STREAM, SUBJECT_STAR);
string subjectA = SubjectDot("A");
string subjectB = SubjectDot("B");
js.Publish(subjectA, DataBytes(1));
js.Publish(subjectA, DataBytes(2));
Thread.Sleep(1500);
js.Publish(subjectA, DataBytes(3));
js.Publish(subjectB, DataBytes(91));
js.Publish(subjectB, DataBytes(92));
// DeliverPolicy.All
PushSubscribeOptions pso = PushSubscribeOptions.Builder()
.WithConfiguration(ConsumerConfiguration.Builder().WithDeliverPolicy(DeliverPolicy.All).Build())
.Build();
IJetStreamPushSyncSubscription sub = js.PushSubscribeSync(subjectA, pso);
Msg m1 = sub.NextMessage(1000);
AssertMessage(m1, 1);
Msg m2 = sub.NextMessage(1000);
AssertMessage(m2, 2);
Msg m3 = sub.NextMessage(1000);
AssertMessage(m3, 3);
// DeliverPolicy.Last
pso = PushSubscribeOptions.Builder()
.WithConfiguration(ConsumerConfiguration.Builder().WithDeliverPolicy(DeliverPolicy.Last).Build())
.Build();
sub = js.PushSubscribeSync(subjectA, pso);
Msg m = sub.NextMessage(1000);
AssertMessage(m, 3);
AssertNoMoreMessages(sub);
// DeliverPolicy.New - No new messages between subscribe and next message
pso = PushSubscribeOptions.Builder()
.WithConfiguration(ConsumerConfiguration.Builder().WithDeliverPolicy(DeliverPolicy.New).Build())
.Build();
sub = js.PushSubscribeSync(subjectA, pso);
AssertNoMoreMessages(sub);
// DeliverPolicy.New - New message between subscribe and next message
sub = js.PushSubscribeSync(subjectA, pso);
js.Publish(subjectA, DataBytes(4));
m = sub.NextMessage(1000);
AssertMessage(m, 4);
// DeliverPolicy.ByStartSequence
pso = PushSubscribeOptions.Builder()
.WithConfiguration(ConsumerConfiguration.Builder()
.WithDeliverPolicy(DeliverPolicy.ByStartSequence)
.WithStartSequence(3)
.Build())
.Build();
sub = js.PushSubscribeSync(subjectA, pso);
m = sub.NextMessage(1000);
AssertMessage(m, 3);
m = sub.NextMessage(1000);
AssertMessage(m, 4);
// DeliverPolicy.ByStartTime
pso = PushSubscribeOptions.Builder()
.WithConfiguration(ConsumerConfiguration.Builder()
.WithDeliverPolicy(DeliverPolicy.ByStartTime)
.WithStartTime(m3.MetaData.Timestamp.AddSeconds(-1))
.Build())
.Build();
sub = js.PushSubscribeSync(subjectA, pso);
m = sub.NextMessage(1000);
AssertMessage(m, 3);
m = sub.NextMessage(1000);
AssertMessage(m, 4);
// DeliverPolicy.LastPerSubject
pso = PushSubscribeOptions.Builder()
.WithConfiguration(ConsumerConfiguration.Builder()
.WithDeliverPolicy(DeliverPolicy.LastPerSubject)
.WithFilterSubject(subjectA)
.Build())
.Build();
sub = js.PushSubscribeSync(subjectA, pso);
m = sub.NextMessage(1000);
AssertMessage(m, 4);
// DeliverPolicy.ByStartSequence with a deleted record
PublishAck pa4 = js.Publish(subjectA, DataBytes(4));
PublishAck pa5 = js.Publish(subjectA, DataBytes(5));
js.Publish(subjectA, DataBytes(6));
jsm.DeleteMessage(STREAM, pa4.Seq);
jsm.DeleteMessage(STREAM, pa5.Seq);
pso = ConsumerConfiguration.Builder()
.WithDeliverPolicy(DeliverPolicy.ByStartSequence)
.WithStartSequence(pa4.Seq)
.BuildPushSubscribeOptions();
sub = js.PushSubscribeSync(subjectA, pso);
m = sub.NextMessage(1000);
AssertMessage(m, 6);
});
}
public static PublishAck JsPublish(IJetStream js, string subject, string data)
{
return(js.Publish(new Msg(subject, Encoding.ASCII.GetBytes(data))));
}
public static PublishAck JsPublish(IJetStream js)
{
return(js.Publish(new Msg(SUBJECT, DataBytes())));
}
public static void Main(string[] args)
{
ArgumentHelper helper = new ArgumentHelperBuilder("JetStream Publish With Options Use Cases", args, Usage)
.DefaultStream("pubopts-stream")
.DefaultSubject("pubopts-subject")
.Build();
try
{
using (IConnection c = new ConnectionFactory().CreateConnection(helper.MakeOptions()))
{
// Create a JetStreamManagement context.
IJetStreamManagement jsm = c.CreateJetStreamManagementContext();
// Use the utility to create a stream stored in memory.
JsUtils.CreateStreamExitWhenExists(jsm, helper.Stream, helper.Subject);
// get a regular context
IJetStream js = c.CreateJetStreamContext();
PublishOptions.PublishOptionsBuilder builder = PublishOptions.Builder()
.WithExpectedStream(helper.Stream)
.WithMessageId("mid1");
PublishAck pa = js.Publish(helper.Subject, Encoding.ASCII.GetBytes("message1"), builder.Build());
Console.WriteLine("Published message on subject {0}, stream {1}, seqno {2}.",
helper.Subject, pa.Stream, pa.Seq);
// IMPORTANT!
// You can reuse the builder in 2 ways.
// 1. Manually set a field to null or to DefaultLastSequence if you want to clear it out.
// 2. Use the clearExpected method to clear the expectedLastId, expectedLastSequence and messageId fields
// Manual re-use 1. Clearing some fields
builder
.WithExpectedLastMsgId("mid1")
.WithExpectedLastSequence(PublishOptions.DefaultLastSequence)
.WithMessageId(null);
pa = js.Publish(helper.Subject, Encoding.ASCII.GetBytes("message2"), builder.Build());
Console.WriteLine("Published message on subject {0}, stream {1}, seqno {2}.",
helper.Subject, pa.Stream, pa.Seq);
// Manual re-use 2. Setting all the expected fields again
builder
.WithExpectedLastMsgId(null)
.WithExpectedLastSequence(PublishOptions.DefaultLastSequence)
.WithMessageId("mid3");
pa = js.Publish(helper.Subject, Encoding.ASCII.GetBytes("message3"), builder.Build());
Console.WriteLine("Published message on subject {0}, stream {1}, seqno {2}.",
helper.Subject, pa.Stream, pa.Seq);
// reuse() method clears all the fields, then we set some fields.
builder.ClearExpected()
.WithExpectedLastSequence(pa.Seq)
.WithMessageId("mid4");
pa = js.Publish(helper.Subject, Encoding.ASCII.GetBytes("message4"), builder.Build());
Console.WriteLine("Published message on subject {0}, stream {1}, seqno {2}.",
helper.Subject, pa.Stream, pa.Seq);
// exception when the expected stream does not match [10060]
try
{
PublishOptions errOpts = PublishOptions.Builder().WithExpectedStream("wrongStream").Build();
js.Publish(helper.Subject, Encoding.ASCII.GetBytes("ex1"), errOpts);
}
catch (NATSJetStreamException e)
{
Console.WriteLine($"Exception was: '{e.ErrorDescription}'");
}
// exception with wrong last msg ID [10070]
try
{
PublishOptions errOpts = PublishOptions.Builder().WithExpectedLastMsgId("wrongId").Build();
js.Publish(helper.Subject, Encoding.ASCII.GetBytes("ex2"), errOpts);
}
catch (NATSJetStreamException e)
{
Console.WriteLine($"Exception was: '{e.ErrorDescription}'");
}
// exception with wrong last sequence wrong last sequence: 4 [10071]
try
{
PublishOptions errOpts = PublishOptions.Builder().WithExpectedLastSequence(999).Build();
js.Publish(helper.Subject, Encoding.ASCII.GetBytes("ex3"), errOpts);
}
catch (NATSJetStreamException e)
{
Console.WriteLine($"Exception was: '{e.ErrorDescription}'");
}
// delete the stream since we are done with it.
jsm.DeleteStream(helper.Stream);
}
}
catch (Exception ex)
{
helper.ReportException(ex);
}
}
public void TestPublishExpectations()
{
Context.RunInJsServer(c =>
{
CreateMemoryStream(c, STREAM, Subject(1), Subject(2));
IJetStream js = c.CreateJetStreamContext();
PublishOptions po = PublishOptions.Builder()
.WithExpectedStream(STREAM)
.WithMessageId(MessageId(1))
.Build();
PublishAck pa = js.Publish(Subject(1), DataBytes(1), po);
AssertPublishAck(pa, 1);
po = PublishOptions.Builder()
.WithExpectedLastMsgId(MessageId(1))
.WithMessageId(MessageId(2))
.Build();
pa = js.Publish(Subject(1), DataBytes(2), po);
AssertPublishAck(pa, 2);
po = PublishOptions.Builder()
.WithExpectedLastSequence(2)
.WithMessageId(MessageId(3))
.Build();
pa = js.Publish(Subject(1), DataBytes(3), po);
AssertPublishAck(pa, 3);
po = PublishOptions.Builder()
.WithExpectedLastSequence(3)
.WithMessageId(MessageId(4))
.Build();
pa = js.Publish(Subject(2), DataBytes(4), po);
AssertPublishAck(pa, 4);
po = PublishOptions.Builder()
.WithExpectedLastSubjectSequence(3)
.WithMessageId(MessageId(5))
.Build();
pa = js.Publish(Subject(1), DataBytes(5), po);
AssertPublishAck(pa, 5);
po = PublishOptions.Builder()
.WithExpectedLastSubjectSequence(4)
.WithMessageId(MessageId(6))
.Build();
pa = js.Publish(Subject(2), DataBytes(6), po);
AssertPublishAck(pa, 6);
PublishOptions po1 = PublishOptions.Builder().WithExpectedStream(Stream(999)).Build();
Assert.Throws <NATSJetStreamException>(() => js.Publish(Subject(1), DataBytes(999), po1));
PublishOptions po2 = PublishOptions.Builder().WithExpectedLastMsgId(MessageId(999)).Build();
Assert.Throws <NATSJetStreamException>(() => js.Publish(Subject(1), DataBytes(999), po2));
PublishOptions po3 = PublishOptions.Builder().WithExpectedLastSequence(999).Build();
Assert.Throws <NATSJetStreamException>(() => js.Publish(Subject(1), DataBytes(999), po3));
PublishOptions po4 = PublishOptions.Builder().WithExpectedLastSubjectSequence(999).Build();
Assert.Throws <NATSJetStreamException>(() => js.Publish(Subject(1), DataBytes(999), po4));
});
}
public void TestPushAsyncFlowControl()
{
InterlockedInt fcps = new InterlockedInt();
Action <Options> optionsModifier = opts =>
{
opts.FlowControlProcessedEventHandler = (sender, args) =>
{
fcps.Increment();
};
};
Context.RunInJsServer(new TestServerInfo(TestSeedPorts.AutoPort.Increment()), optionsModifier, c =>
{
// create the stream.
CreateDefaultTestStream(c);
// Create our JetStream context.
IJetStream js = c.CreateJetStreamContext();
byte[] data = new byte[8192];
int msgCount = 1000;
for (int x = 100_000; x < msgCount + 100_000; x++)
{
byte[] fill = Encoding.ASCII.GetBytes("" + x);
Array.Copy(fill, 0, data, 0, 6);
js.Publish(new Msg(SUBJECT, data));
}
InterlockedInt count = new InterlockedInt();
HashSet <string> set = new HashSet <string>();
CountdownEvent latch = new CountdownEvent(msgCount);
// create our message handler, does not ack
void Handler(object sender, MsgHandlerEventArgs args)
{
byte[] fill = new byte[6];
Array.Copy(args.Message.Data, 0, fill, 0, 6);
string id = Encoding.ASCII.GetString(fill);
if (set.Add(id))
{
count.Increment();
}
args.Message.Ack();
latch.Signal();
}
// subscribe using the handler
ConsumerConfiguration cc = ConsumerConfiguration.Builder().WithFlowControl(1000).Build();
PushSubscribeOptions pso = PushSubscribeOptions.Builder().WithConfiguration(cc).Build();
js.PushSubscribeAsync(SUBJECT, Handler, false, pso);
// wait for messages to arrive using the countdown latch.
latch.Wait();
Assert.Equal(msgCount, count.Read());
Assert.True(fcps.Read() > 0);
});
}